What Size Ratio Should You Order? Sizing Guide for Clothing Brands
For clothing brand founders, screen printers, and merch sellers, getting the size ratio right is critical for profitability. Order too many of one size and you are stuck with dead stock, order too few and you miss sales.
The short answer: start with a bell curve ratio around S 1 : M 2 : L 3 : XL 2 : 2XL 1, shift it toward the larger sizes for a streetwear or oversized-fit program, then refine with your own sell-through data after the first reorder cycle.
This guide helps you align inventory with customer demand.
Understanding the Standard Bell Curve Size Ratio
A common starting ratio for unisex fleece and program orders is a bell curve distribution where the majority of demand clusters in the middle sizes. A typical baseline:
S : M : L : XL : 2XL = 1 : 2 : 3 : 2 : 1
For a 100-unit order, that translates to approximately:
- Small: 11 units
- Medium: 22 units
- Large: 34 units
- Extra Large: 22 units
- 2XL: 11 units
The center of demand often clusters around M, L, and XL, with the peak depending on your audience and fit. This ratio helps you cover a broad customer base without overcommitting to less popular sizes.
Adjusting Your Ratio by Niche
Your brand’s specific niche and target demographic will heavily influence your ideal size ratio.
Streetwear: Skewing Larger
Streetwear brands often cater to a demographic that prefers a looser, oversized fit. For streetwear, a ratio might shift toward:
S : M : L : XL : 2XL : 3XL = 1 : 1 : 2 : 3 : 2 : 1
Note that adding 3XL means rebuilding the entire size curve rather than simply tacking on a size. Fashion-driven upsizing (buying a standard size in an oversized-cut garment) is different from true extended-size demand: consider which dynamic applies to your customer base.
Brands outfitting a fixed staff roster instead of an open retail market can find program-focused guidance on our page covering wholesale blanks for corporate and employee programs.
Youth Sizes: A Different Distribution
Youth sizes (YXS, YS, YM, YL, YXL) have their own bell curve where Youth Medium and Youth Large typically dominate. Note that team/uniform orders, school spiritwear, and youth retail may follow different distribution patterns.
Women’s and Unisex Considerations
Women’s cut, junior fit, and unisex fit are different size systems with different demand patterns. For unisex lines, M and L often lead: S:M:L:XL = 2:3:3:2 may work as a starting point. Garment specs and your target customer matter more than the label alone.
Using Sell-Through Data to Refine Your Ratio
The most accurate way to optimize your size ratio is by analyzing your own sales data.
First Order vs. Reorders
For your first order, use the standard bell curve adjusted for your niche as a starting point. After your initial launch, track every sale by size. When it is time to reorder, adjust based on actual sell-through data.
Long-Term Optimization
Over several sales cycles, you will develop a customized size ratio unique to your brand. Track these metrics in a spreadsheet:
- Units ordered per size
- Units sold per size (within 30, 60, 90 days)
- Sell-through percentage per size
- Days to sell out per size
Three Layer’s Extended Size Range
Three Layer Sportswear’s extended sizing goes up to 5XL on some styles, such as the P280 midweight pullover hoodie (XS to 5XL), while others run S to 3XL, such as the CR280 midweight crewneck. Extended size availability can reduce split sourcing and help standardize programs across more end customers. Verify the exact size range for the specific style and color you plan to order, since the range varies by SKU.
Common Mistakes to Avoid
Ordering Too Many Smalls
Small is often a slower mover in many unisex adult programs, though this is not universal: fashion-forward, younger, or women-led customer bases may have healthy Small demand. Unless your niche specifically skews small, keep Small quantities conservative.
Under-Ordering Extended Sizes
The demand for extended sizes (2XL and above) is significant and growing. If your supplier offers extended sizes, factor them into your ratio rather than assuming low demand. Note that extended sizes may have different dye-lot availability, minimums, or lead times.
Not Accounting for Fit Style
An oversized-fit garment will have different size distribution patterns than a true-to-size fit. Whether customers size down depends on whether the garment is pattern-cut oversized or simply sized up from a standard block. Always consider the actual fit of your specific blank when planning ratios.
Practical Tips for First-Time Orders
Start with the Standard Bell Curve
Unless you have data specific to your audience, begin with the 1:2:3:2:1 ratio. It is safer than guessing and gives you a baseline to refine after your first sales cycle.
Order Conservatively, Reorder Based on Data
For brands with short domestic reorder cycles, starting smaller and reordering based on sell-through data reduces dead stock risk. For brands with longer overseas replenishment cycles, factor in reorder lead time: stockouts can be more damaging than light overage when replenishment takes weeks.
Talk to Your Audience
If you have an existing following, run polls asking about preferred fit and typical sizes. This direct feedback helps refine your ratio before you place your first order.
Consider Pre-Orders
For higher-priced or niche items, pre-orders let you gauge demand by size before placing your bulk order. Pre-orders can materially reduce size-risk, though cancellations and production extras mean some dead stock risk remains.
Optimizing your size ratio is an ongoing process of data analysis, market understanding, and strategic adjustment. Start with a solid foundation, track everything, and refine with each order.
There is no minimum order on standard stock. In-stock paid orders placed by 12pm PT ship the same day. Custom production runs on a 120 day lead time. Every garment is made at our own WRAP certified factory.
Browse the full collection and current color availability on our wholesale pullover hoodies category page.